BIIB
BIOGEN INC.Company with tickers: BIIB
CIK
875045
CUSIP
09062X103
Shares Outstanding
146,758,528
Price
Holdings
Short Volume
Short Interest
Fails to Deliver
SEC Filings
Earnings Calls
Insider Trading
Congress Trades
Report Date:
Holders: 974
Total Value: $21,562,700,646
Total Shares: 122,522,310
Showing top 100 of 974 holders by value
| Holder | Value (USD) | Shares | Type | Discretion | Filed | Action |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | $2,606,652,996 | 14,811,370 | Shares | Sole | 2026-02-12 | View |
| PRIMECAP MANAGEMENT CO/CA/ | $2,597,259,892 | 14,757,997 | Shares | Sole | 2026-02-11 | View |
| FMR LLC | $1,658,857,626 | 9,425,863 | Shares | Defined | 2026-02-17 | View |
| STATE STREET CORP | $1,259,915,929 | 7,159,020 | Shares | Defined | 2026-02-13 | View |
| GEODE CAPITAL MANAGEMENT, LLC | $739,052,229 | 4,199,399 | Shares | Defined | 2026-02-09 | View |
| WELLINGTON MANAGEMENT GROUP LLP | $624,987,827 | 3,551,269 | Shares | Defined | 2026-02-17 | View |
| Point72 Asset Management, L.P. | $495,093,660 | 2,813,192 | Shares | Defined | 2026-02-17 | View |
| NORGES BANK | $464,408,395 | 2,638,834 | Shares | Sole | 2026-02-10 | View |
| JPMORGAN CHASE & CO | $326,859,533 | 1,857,262 | Shares | Other | 2026-02-11 | View |
| Boston Partners | $302,807,513 | 1,720,595 | Shares | Defined | 2026-02-13 | View |
| Invesco Ltd. | $291,341,053 | 1,655,441 | Shares | Defined | 2026-02-19 | View |
| AQR CAPITAL MANAGEMENT LLC | $269,021,126 | 1,528,616 | Shares | Other | 2026-02-17 | View |
| Legal & General Group Plc | $256,874,475 | 1,459,597 | Shares | Defined | 2026-02-09 | View |
| NORTHERN TRUST CORP | $254,503,711 | 1,446,126 | Shares | Other | 2026-02-17 | View |
| BARCLAYS PLC | $229,668,181 | 1,305,007 | Shares | Sole | 2026-02-13 | View |
| UBS ASSET MANAGEMENT AMERICAS INC | $227,974,100 | 1,295,381 | Shares | Sole | 2026-02-13 | View |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $201,315,312 | 1,143,902 | Shares | Sole | 2026-02-13 | View |
| BANK OF AMERICA CORP /DE/ | $198,665,427 | 1,128,845 | Shares | Defined | 2026-02-17 | View |
| MILLENNIUM MANAGEMENT LLC | $198,091,880 | 1,125,586 | Shares | Sole | 2026-02-17 | View |
| GOLDMAN SACHS GROUP INC | $193,430,255 | 1,099,098 | Shares | Defined | 2026-02-10 | View |
| VAN ECK ASSOCIATES CORP | $187,537,759 | 1,065,616 | Shares | Sole | 2026-02-13 | View |
| Alyeska Investment Group, L.P. | $180,260,925 | 1,024,268 | Shares | Sole | 2026-02-13 | View |
| Point72 Asset Management, L.P. | $176,253,985 | 1,001,500 | Shares | Defined | 2026-02-17 | View |
| DIMENSIONAL FUND ADVISORS LP | $169,063,911 | 960,645 | Shares | Sole | 2026-02-12 | View |
| DEUTSCHE BANK AG\ | $167,846,585 | 953,728 | Shares | Defined | 2026-02-11 | View |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $167,806,465 | 953,500 | Shares | Other | 2026-02-17 | View |
| Pictet Asset Management Holding SA | $166,749,469 | 947,494 | Shares | Sole | 2026-01-29 | View |
| VANGUARD GROUP INC | $158,024,060 | 897,915 | Shares | Defined | 2026-01-29 | View |
| Bank of New York Mellon Corp | $142,746,536 | 811,106 | Shares | Defined | 2026-02-10 | View |
| FRED ALGER MANAGEMENT, LLC | $140,576,236 | 798,774 | Shares | Sole | 2026-02-17 | View |
| PRICE T ROWE ASSOCIATES INC /MD/ | $139,396,574 | 792,071 | Shares | Sole | 2026-02-17 | View |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $125,403,256 | 712,559 | Shares | Sole | 2026-01-22 | View |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $123,509,782 | 701,800 | Shares | Other | 2026-02-17 | View |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $116,449,767 | 661,684 | Shares | Other | 2026-02-17 | View |
| UBS Group AG | $112,948,265 | 641,788 | Shares | Defined | 2026-01-29 | View |
| Robeco Institutional Asset Management B.V. | $107,513,698 | 610,908 | Shares | Defined | 2026-01-23 | View |
| Balyasny Asset Management LLC | $106,993,648 | 607,953 | Shares | Sole | 2026-02-17 | View |
| CAISSE DE DEPOT ET PLACEMENT DU QUEBEC | $103,578,034 | 588,545 | Shares | Sole | 2026-02-17 | View |
| Patient Capital Management, LLC | $101,432,188 | 576,352 | Shares | Sole | 2026-02-13 | View |
| CITIGROUP INC | $100,990,805 | 573,844 | Shares | Defined | 2026-02-13 | View |
| AMUNDI | $100,741,778 | 572,429 | Shares | Defined | 2026-02-17 | View |
| FIRST TRUST ADVISORS LP | $99,583,413 | 565,847 | Shares | Sole | 2026-02-13 | View |
| ROYAL BANK OF CANADA | $95,355,777 | 541,825 | Shares | Defined | 2026-02-17 | View |
| CAUSEWAY CAPITAL MANAGEMENT LLC | $91,708,564 | 521,101 | Shares | Sole | 2026-02-13 | View |
| BNP PARIBAS ARBITRAGE, SA | $89,414,711 | 508,067 | Shares | Defined | 2026-02-10 | View |
| AustralianSuper Pty Ltd | $83,914,143 | 476,812 | Shares | Sole | 2026-02-05 | View |
| Zurcher Kantonalbank (Zurich Cantonalbank) | $79,625,267 | 452,442 | Shares | Sole | 2026-01-27 | View |
| CITADEL ADVISORS LLC | $71,627,930 | 407,000 | Shares | Defined | 2026-02-17 | View |
| Swiss National Bank | $70,712,782 | 401,800 | Shares | Sole | 2026-02-12 | View |
| RENAISSANCE TECHNOLOGIES LLC | $70,254,504 | 399,196 | Shares | Sole | 2026-02-12 | View |
| MARSHALL WACE, LLP | $67,919,467 | 385,928 | Shares | Other | 2026-02-13 | View |
| HRT FINANCIAL LLC | $67,626,797 | 384,265 | Shares | Defined | 2026-02-12 | View |
| Nuveen, LLC | $66,094,275 | 375,557 | Shares | Defined | 2026-02-12 | View |
| Sumitomo Mitsui Trust Holdings, Inc. | $65,226,645 | 370,627 | Shares | Defined | 2026-01-23 | View |
| PRUDENTIAL FINANCIAL INC | $62,211,232 | 353,493 | Shares | Defined | 2026-02-13 | View |
| Jain Global LLC | $62,154,916 | 353,173 | Shares | Sole | 2026-02-17 | View |
| JANE STREET GROUP, LLC | $61,842,886 | 351,400 | Shares | Defined | 2026-02-12 | View |
| Man Group plc | $59,710,590 | 339,284 | Shares | Defined | 2026-02-17 | View |
| CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM | $58,218,547 | 330,806 | Shares | Sole | 2026-02-12 | View |
| Candriam Luxembourg S.C.A. | $58,159,767 | 330,472 | Shares | Sole | 2026-02-13 | View |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | $56,300,784 | 319,909 | Shares | Defined | 2026-02-03 | View |
| FIL Ltd | $56,236,548 | 319,544 | Shares | Defined | 2026-02-17 | View |
| LSV ASSET MANAGEMENT | $55,756,271 | 316,815 | Shares | Sole | 2026-02-06 | View |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | $51,803,888 | 294,357 | Shares | Sole | 2026-02-17 | View |
| Fisher Asset Management, LLC | $51,612,411 | 293,269 | Shares | Defined | 2026-02-09 | View |
| GLENVIEW CAPITAL MANAGEMENT, LLC | $51,143,573 | 290,605 | Shares | Sole | 2026-02-17 | View |
| National Pension Service | $50,551,015 | 287,238 | Shares | Sole | 2026-02-10 | View |
| Gotham Asset Management, LLC | $48,715,615 | 276,809 | Shares | Sole | 2026-02-17 | View |
| RHUMBLINE ADVISERS | $47,824,578 | 271,746 | Shares | Sole | 2026-02-13 | View |
| KAMES CAPITAL plc | $45,785,910 | 260,162 | Shares | Sole | 2026-01-29 | View |
| TWO SIGMA INVESTMENTS, LP | $44,307,770 | 251,763 | Shares | Sole | 2026-02-17 | View |
| Centiva Capital, LP | $43,997,500 | 250,000 | Shares | Sole | 2026-02-13 | View |
| Allianz Asset Management GmbH | $43,596,594 | 247,722 | Shares | Defined | 2026-02-11 | View |
| VICTORY CAPITAL MANAGEMENT INC | $43,407,933 | 246,650 | Shares | Sole | 2026-02-13 | View |
| THOMPSON SIEGEL & WALMSLEY LLC | $40,267,743 | 228,807 | Shares | Defined | 2026-02-10 | View |
| Artemis Investment Management LLP | $39,922,451 | 226,845 | Shares | Sole | 2026-02-02 | View |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $39,840,616 | 226,380 | Shares | Sole | 2026-02-17 | View |
| Hudson Bay Capital Management LP | $39,045,141 | 221,860 | Shares | Sole | 2026-02-13 | View |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $37,972,306 | 215,764 | Shares | Defined | 2026-02-13 | View |
| LOS ANGELES CAPITAL MANAGEMENT & EQUITY RESEARCH INC | $36,102,588 | 205,140 | Shares | Sole | 2026-02-11 | View |
| Logos Global Management LP | $35,198,000 | 200,000 | Shares | Sole | 2026-02-17 | View |
| KLP KAPITALFORVALTNING AS | $33,733,235 | 191,677 | Shares | Sole | 2026-01-28 | View |
| JANE STREET GROUP, LLC | $33,420,501 | 189,900 | Shares | Defined | 2026-02-12 | View |
| Freestone Grove Partners LP | $33,017,131 | 187,608 | Shares | Sole | 2026-02-17 | View |
| ACADIAN ASSET MANAGEMENT LLC | $32,990,557 | 187,457 | Shares | Defined | 2026-02-10 | View |
| PRINCIPAL FINANCIAL GROUP INC | $32,415,422 | 184,189 | Shares | Defined | 2026-02-02 | View |
| SG Americas Securities, LLC | $32,352,065 | 183,829 | Shares | Sole | 2026-01-09 | View |
| ALLIANCEBERNSTEIN L.P. | $32,337,106 | 183,744 | Shares | Defined | 2026-02-17 | View |
| Palo Alto Investors LP | $32,306,660 | 183,571 | Shares | Sole | 2026-02-17 | View |
| BARCLAYS PLC | $31,695,799 | 180,100 | Shares | Sole | 2026-02-13 | View |
| CITADEL ADVISORS LLC | $28,510,380 | 162,000 | Shares | Defined | 2026-02-17 | View |
| Defilade Capital Management, L.P. | $28,508,972 | 161,992 | Shares | Sole | 2026-02-13 | View |
| NOMURA HOLDINGS INC | $25,916,463 | 147,261 | Shares | Defined | 2026-02-17 | View |
| BANCO BILBAO VIZCAYA ARGENTARIA, S.A. | $25,861,906 | 146,951 | Shares | Defined | 2026-02-17 | View |
| Squarepoint Ops LLC | $25,766,343 | 146,408 | Shares | Defined | 2026-02-13 | View |
| MORGAN STANLEY | $25,647,902 | 145,735 | Shares | Defined | 2026-02-13 | View |
| FRANKLIN RESOURCES INC | $24,880,406 | 141,374 | Shares | Defined | 2026-02-11 | View |
| Standard Life Aberdeen plc | $24,617,129 | 139,878 | Shares | Defined | 2026-01-16 | View |
| IEQ CAPITAL, LLC | $24,575,067 | 139,639 | Shares | Other | 2026-02-13 | View |
| CANADA PENSION PLAN INVESTMENT BOARD | $24,300,347 | 138,078 | Shares | Sole | 2026-02-17 | View |